Salicylic Acid Specification :
BP grade
| Items | Specification | Results |
| Appearance | White or almost white crystalline powder or colourless crystals | White crystalline powder |
| Identification | A melting point 158-161℃ >B the IR spectrum of sample complies with salicylic acid CRS | 158.9-160.3℃ Conforms |
| Appearance of solution | Clear and colourless | Conforms |
| Related substances | 4-hydroxybenzoic acid ≤0.1% 4-hydroxyisophthalic acid ≤0.05% Phenol ≤0.02% Other impurities ≤0.05% Total impurities ≤0.2% | 0.01% 0.00% 0.00% <0.05% <0.02% |
| Chloride | ≤100ppm | <100ppm |
| Sulfate | ≤200ppm | <200ppm |
| Heavy metals | ≤20ppm | <20ppm |
| Loss on drying | ≤0.5% | 0.02% |
| Sulphated ash | ≤0.1% | 0.03% |
| Assay(dried substance) | 99.0%-100.5% | 99.6% |
| Conclusion: | Meet the requirement of BP2010 standard. | |
Industrial grade
| Items | Specification | Results |
| Appearance | Pale pink to off white powder | Conforms |
| Purity | 99.0% min | 99.32% |
| Initial melting point | 156℃ min | 156.6℃ |
| Phenol | 0.20% max | 0.16% |
| Ash | 0.30% max | 0.21% |
| Conclusion: | Meet the requirement of house standard. | |
Application:
For antipyretic, analgesic, anti-inflammatory and diuretic drugs in pharmaceutical industry.
CAS NO.
69-72-7
Name
Salicylic acid
Alias
2-Hydroxybenzoic acid
Formula
C7H6O3
Formula weight
138.12
Structural formula
Density
1.44
Boiling point
211 ºC (20 mmHg)
Flash point
157 ºC
Sublimation point
70 ºC
Water solubility
1.8 g/L (20 ºC)
Melting point
158-161 ºC
Hazard Symbols
Xn
Safety Description
S26;S37/39
Risk Codes
R22;R36/37/38;R41
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